DOWNLOAD LG 37LG50D (CHASSIS:LJ82A) Service Manual ↓ Size: 2.31 MB | Pages: 39 in PDF or view online for FREE

- 33 -

USB T r ouble Shooting

Check USB 2. 0 Cable

Check L 205 voltag e level 5V

Y

N

Replace it o r IC202

Check P20 1

Replace it

Y

N

Check USB D evice

If de vice is 2.5  inch HDD, check po wer 

adapto r

Y

Maybe BCM3553 has p roblems

Y

• Excep tio n  

- USB p ower could  be disabled by  inrus hing  curre nt

- In t his case, remo ve the dev ice and try to reboot  the  TV (AC po wer off/on)

- 34 -

 

 

- 35 -

300

510

500

121

120

122

200

801

900

901

802

803

805

806

804

830

550

530

821

521

540

400

200T

200N

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.